CN114306815A

CN114306815A - Prevent stabbing insulin pen

Info

Publication number: CN114306815A
Application number: CN202111334713.8A
Authority: CN
Inventors: 操凯
Original assignee: First Affiliated Hospital of Zhejiang University School of Medicine
Current assignee: First Affiliated Hospital of Zhejiang University School of Medicine
Priority date: 2021-11-11
Filing date: 2021-11-11
Publication date: 2022-04-12
Anticipated expiration: 2041-11-11
Also published as: CN114306815B

Abstract

The invention provides an anti-stab insulin pen, and belongs to the technical field of insulin pens. The prior art is easy to stab. The injection push key is characterized in that an extension rod is arranged on the top of the injection push key in an upward mode, the penetrating channel is used for containing an insulin pen, the puncture-proof device comprises a button and a switching device, the top end of the button extends out of the puncture-proof shell from the penetrating channel, the bottom end of the button penetrates through the clamping ring and abuts against the top of the rotating ring, a movable channel penetrates through the button and is communicated with the penetrating channel, the extension rod extends out of the movable channel in an upward mode, the extension rod and the button are not interfered with each other, dislocation devices are symmetrically arranged on two sides of the side wall of the lower portion of the penetrating channel at the bottom of the rotating ring and are used for driving a needle head to be separated from the pen body, and in a first state, the needle head extends out of the bottom of the puncture-proof shell; in the second state, the needle is retracted into the puncture-proof shell; in a third state, the dislocation device drives the needle head to be separated from the pen body; the button is used for people to press so as to control the switching device to work, and the first state, the second state and the third state are sequentially switched and circulated. Preventing puncture.

Description

Prevent stabbing insulin pen

Technical Field

The invention belongs to the technical field of puncture-proof insulin pens, and particularly relates to a puncture-proof insulin pen.

Background

The insulin pen avoids the tedious process that the patient draws insulin in the insulin medicine bottle by using an injector, can avoid the embarrassment that the patient injects insulin in public places, and brings convenience for the patient with poor eyesight or even blindness to inject insulin.

Among the prior art, insulin pen's syringe needle passes through threaded connection with the refill of preventing stabbing insulin pen, and after medical personnel had injected insulin for the patient, need take place to stab easily with the hand syringe needle screw-off.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides an insulin pen capable of preventing puncture.

The purpose of the invention can be realized by the following technical scheme: the utility model provides a prevent stinging insulin pen, its characterized in that, includes prevents stinging mechanism, insulin pen and syringe needle, insulin pen includes the handwriting and injects and pushes away the key, the syringe needle with the bottom of handwriting can be dismantled the connection, the injection pushes away the key top and upwards is provided with the extension rod, prevent stinging mechanism includes prevent stinging casing and sets up in preventing stinging the interior protection device of casing, prevent stinging the casing including the last casing and the lower casing that can dismantle the setting, prevent stinging the casing and run through and be provided with the passageway of establishing, it is used for holding insulin pen to wear to establish the passageway, prevent stinging the device and include button and auto-change over device, the button top is worn to establish the passageway and is stretched out prevent stinging the casing, the button bottom passes joint ring butt in the swivel head, the button runs through and is provided with the movable channel, the movable channel with wear to establish the passageway intercommunication, the extension rod follows the movable channel upwards stretches out, the extension rod and the button are not interfered with each other, dislocation devices are symmetrically arranged on two sides of the side wall of the lower part of the penetrating channel at the bottom of the rotating ring and used for driving the needle head to be separated from the pen body, and in a first state, the needle head extends out of the bottom of the puncture-proof shell; a second state in which the needle is retracted within the anti-stab housing; in a third state, the dislocation device drives the needle head to be separated from the pen body; the button is used for being pressed by a person to control the switching device to work so that the first state, the second state and the third state are sequentially switched and circulated.

The working principle of the invention is as follows: in the first state, the needle head extends out from the bottom of the puncture-proof shell, and the extension rod extends upwards from the movable channel on the button, so that even if the injection push key is positioned in the puncture-proof shell, medical personnel can inject insulin for a patient by pressing the extension rod; if the patient needs to wait for a moment in case of occurrence and cannot inject immediately, the medical staff can press the button to enter the second state, and the needle head is positioned in the puncture-proof shell and cannot puncture the medical staff, so that the safety is high; when the needle head needs to be taken off after the injection of the patient, the medical staff presses the button again, the needle head is separated from the pen body and falls out of the penetrating channel, and the medical staff can take the invention above the edge tool box, so that the needle head can directly fall into the edge tool box.

In the above-mentioned insulin pen for preventing puncture, the upper case and the lower case are connected by a screw.

In foretell insulin pen of preventing stabbing, the fixed bulge loop that is provided with in handwriting upper portion, it is provided with annular arch to wear to establish passageway lower part lateral wall along the perimeter, be fixed with first reset spring in the annular arch, first reset spring's top butt is in the bottom of bulge loop, auto-change over device includes joint ring and rotating ring, the periphery wall of joint ring is fixed in on the passageway lateral wall of wearing to establish in the upper casing, a plurality of breach groups have been seted up on the lower part lateral wall of joint ring, breach group includes first breach, second breach and third breach, the length of first breach, second breach and third breach reduces in proper order, the bottom of first breach, second breach and third breach sets up to the arc inclined plane, the coupling part between first breach, second breach and the third breach is the inclined plane, first breach, second breach, Second breach and third breach in all upwards extend on the inside wall of joint ring has the extending groove, the button bottom is provided with a plurality of tooth's sockets along the week length, be provided with a plurality of stoppers on the lateral wall of button lower part, the extending groove is used for supplying the stopper card is gone into, every the stopper all is located two between the tooth's socket, evenly distributed has a plurality of jack catchs on the lateral wall of swivel becket, the bottom butt of button is in the top of swivel becket makes the jack catch card is gone into the tooth's socket, when the people pressed the button, the jack catch can be gone into in first breach or second breach or the third breach, the bottom of swivel becket is used for the butt to be in the top of bulge loop, wear to establish still to be provided with the butt piece on the passageway lateral wall, the butt piece is located the below of second breach.

In foretell prevent stabbing insulin pen, the butt joint mouth that is used for the butt joint syringe needle is offered to the handwriting bottom, the syringe needle includes the pedestal and installs the needle tubing on the pedestal, the one end tip that the needle tubing was kept away from to the base is provided with the card income portion that is used for going into the butt joint mouth, be provided with the dislocation ring on the one end lateral wall that the needle tubing was kept away from to the pedestal, dislocation device is including dislocating piece and second reset spring, the holding tank has all been seted up to the internal passageway lower part both sides lateral wall of wearing to establish of inferior valve, second reset spring's one end is fixed in the bottom of holding tank, second reset spring's the other end with the one end fixed connection of dislocating piece, the one end that the second reset spring was kept away from to the dislocation piece sets up to the inclined plane, the inclined plane is from the lateral wall of wearing to establish the passageway to central downward sloping gradually.

Compared with the prior art, the invention has the advantage of puncture prevention.

Drawings

Fig. 1 is a schematic diagram of an explosive structure of the present invention.

Fig. 2 is a partial structural schematic diagram of the present invention.

Fig. 3 is a schematic cross-sectional view of the present invention in a first state.

Fig. 4 is a schematic cross-sectional view of the present invention in a second state.

Fig. 5 is a schematic cross-sectional view of the present invention in a third state.

Fig. 6 is a schematic view of the structure of the button and snap ring of the present invention.

In the figure, 1, a stab-resistant mechanism; 2. an insulin pen; 3. a needle head; 4. a pen body; 5. an injection push key; 6. an extension rod; 7. a butt joint port; 8. a convex ring; 9. a base body; 10. a needle tube; 11. dislocation loops; 12. a stab-resistant housing; 13. a stab-resistant device; 14. a channel is arranged in a penetrating way; 15. an annular projection; 16. a first return spring; 17. a button; 18. a snap ring; 19. a rotating ring; 20. a set of notches; 21. a first notch; 22. a second notch; 23. A third notch; 24. an extension groove; 25. a tooth socket; 26. a limiting block; 27. a movable channel; 28. a claw; 29. a dislocation device; 30. a dislocation block; 31. a second return spring; 32. accommodating grooves; 33. an upper housing; 34. a lower housing; 35. a butting block; 36. a snap-in portion; 37. and a switching device.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1-6, the stab-resistant insulin pen comprises a stab-resistant mechanism 1, an insulin pen 2 and a needle 3, wherein the insulin pen 2 comprises a pen body 4 and an injection push button 5, the needle 3 is detachably connected with the bottom of the pen body 4, an extension rod 6 is upwardly arranged on the top of the injection push button 5, the stab-resistant mechanism 1 comprises a stab-resistant housing 12 and a stab-resistant device 13 arranged in the stab-resistant housing 12, the stab-resistant housing 12 comprises an upper housing 33 and a lower housing 34 which are detachably arranged, the stab-resistant housing 12 is provided with a through passage 14 in a penetrating manner, the through passage 14 is used for accommodating the insulin pen 2, the stab-resistant device 13 comprises a button 17 and a switching device 37, the top end of the button 17 extends out of the stab-resistant housing 12 from the through passage 14, the bottom end of the button 17 penetrates through a clamping ring 18 and abuts against the top of a rotating ring 19, the button 17 is provided with a movable passage 27 in a penetrating manner, the movable passage 27 is communicated with the through passage 14, the extension rod 6 extends upwards from the movable passage 27, the extension rod 6 and the button 17 do not interfere with each other, dislocation devices 29 are symmetrically arranged on two sides of the lower side wall of the penetrating channel 14 at the bottom of the rotating ring 19, the dislocation devices 29 are used for driving the needle head 3 to be separated from the pen body 4, and in a first state, the needle head 3 extends out of the bottom of the puncture-proof shell 12; in a second state, the needle 3 is retracted into the anti-prick housing 12; in the third state, the dislocation device 29 drives the needle head 3 to be separated from the pen body 4; the button 17 is pressed by a person to control the operation of the switching device 37 so that the first state, the second state, and the third state are sequentially switched and circulated.

In further detail, the upper housing 33 and the lower housing 34 are connected by screw threads, so that the upper housing 33 and the lower housing 34 can be disassembled, then a new insulin pen 2 is inserted into the lower housing 34, the upper housing 33 is replaced in butt joint, and the screw threads are tightly connected and are convenient to disassemble.

In more detail, the upper portion of the pen body 4 is fixedly provided with a convex ring 8, the lower side wall of the through channel 14 is provided with an annular protrusion 15 along the circumference, the annular protrusion 15 is fixed with a first return spring 16, the top of the first return spring 16 abuts against the bottom of the convex ring 8, the switching device 37 comprises a clamping ring 18 and a rotating ring 19, the outer circumferential wall of the clamping ring 18 is fixed on the side wall of the through channel 14 in the upper shell 33, the lower side wall of the clamping ring 18 is provided with a plurality of notch groups 20, each notch group 20 comprises a first notch 21, a second notch 22 and a third notch 23, the lengths of the first notch 21, the second notch 22 and the third notch 23 are sequentially reduced, the bottoms of the first notch 21, the second notch 22 and the third notch 23 are arc-shaped inclined planes, the connecting portions between the first notch 21, the second notch 22 and the third notch 23 are inclined planes, the first notch 21, the second notch 22 and the third notch 23 extend upwards on the inner side wall of the clamping ring 18 to form an extending groove 24, the bottom of the button 17 is provided with a plurality of tooth grooves 25 along the circumference, the side wall of the lower part of the button 17 is provided with a plurality of limiting blocks 26, the extension groove 24 is used for the limiting blocks 26 to be clamped in, each limiting block 26 is positioned between two tooth grooves 25, a plurality of clamping claws 28 are uniformly distributed on the side wall of the rotating ring 19, the bottom of the button 17 is abutted against the top of the rotating ring 19 to ensure that the clamping claws 28 are clamped in the tooth grooves 25, when a person presses the button 17, the clamping claws 28 can be clamped in the first notch 21, the second notch 22 or the third notch 23, the bottom of the rotating ring 19 is abutted against the top of the convex ring 8, the side wall of the penetrating channel 14 is also provided with an abutting block 35, and the abutting block 35 is positioned below the second notch 22; under the first state, the claw 28 is clamped in the second notch 22, at the moment, the needle head 3 extends out from the bottom of the puncture-proof shell 12, when a patient needs to inject, a medical worker can press the extension rod 6 to push the injection push key 5 to inject the patient, if the situation occurs when the patient injects, a user needs to wait for a period of time or the medical worker presses the button 17 to enter the second state, at the moment, the needle head 3 is retracted into the puncture-proof shell 12, the medical worker does not need to worry about being punctured, the medical worker presses the button 17 again, the claw 28 is clamped in the tooth groove 25, because the limiting block 26 is positioned in the extension groove 24, the tip of the claw 28 is positioned in the middle of the side wall with the tooth groove 25 inclined upwards, the button 17 descends to drive the rotating ring 19 to descend, the limiting block 26 also moves downwards into the second notch 22, the claw 28 leaves the second notch 22, and the distance between the abutting block 35 and the opening of the second notch 22 is enough for the claw 28 to enable the tip of the claw 28 descending into the tip of the top of the claw 28 to contact with the connection between the second notch 22 and the first notch 22 In the joint part, the bottom of the claw 28 will abut against the top of the abutting block 35, which can prevent the situation that the medical staff presses the button 17 to press the button 17 to drive the needle 3 to descend too much, so that the convex ring 8 on the needle 3 descends to the bottom of the dislocation block 30, and the needle 3 is separated from the insulin pen 2, the button 17 is released, the rotating ring 19 ascends under the action of the first return spring 16, the claw 28 ascends along the side wall inclined upwards along the tooth slot 25 until the tip of the claw 28 abuts against the bottom of the tooth slot 25, the claw 28 enters the first notch 21 along the inclined plane of the connecting part between the second notch 22 and the first notch 21 in the process, the length of the first notch 21 is longest, therefore, the needle 3 will be retracted into the puncture-proof housing 12, the medical staff presses the button 17 again, and likewise, the claw 28 is transferred from the first notch 21 to the third notch 23, due to the arrangement of the inclined plane, the dislocation ring 11, when moved downward, will squeeze and retract the dislocation block 30 into the receiving groove 32, at which time the needle 3 protrudes from the bottom of the anti-prick housing 12 and the dislocation ring 11 on the needle 3 is located below the dislocation block 30.

In more detail, the bottom of the pen body 4 is provided with a docking port 7 for docking the needle 3, the needle 3 comprises a seat body 9 and a needle tube 10 installed on the seat body 9, the end part of the end of the seat body, which is far away from the needle tube 10, is provided with a clamping part 36 for clamping into the docking port 7, the side wall of the end, which is far away from the needle tube 10, of the seat body 9 is provided with a dislocation ring 11, the dislocation device 29 comprises a dislocation block 30 and a second return spring 31, the side walls of the two sides of the lower part of the through channel 14 in the lower shell 34 are both provided with accommodating grooves 32, one end of the second return spring 31 is fixed at the bottom of the accommodating grooves 32, the other end of the second return spring 31 is fixedly connected with one end of the dislocation block 30, which is far away from the second return spring 31, is set as an inclined plane, and the inclined plane gradually inclines downwards from the side wall of the through channel 14 to the center; the button 17 is pressed down again in the second state, the claw 28 is transferred to the first second gap from the third gap 23 again, namely, the second state is transferred, the claw 28 is lifted and transferred to the second gap 22, the dislocation ring 11 is propped against by the dislocation block 30, and the needle head 3 and the pen body 4 are clamped into the butt joint port 7 through the clamping part 36, so that the needle head 3 can be separated from the pen body 4 under the action of the lifting force and the dislocation block 30, the third state is achieved, the medical staff is not required to manually screw down the needle head 3, and the safety is very high.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Although a large number of terms are used here more, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims

1. The utility model provides a prevent stinging insulin pen, characterized in that, including preventing stinging mechanism (1), insulin pen (2) and syringe needle (3), insulin pen (2) are including handwriting (4) and injection push away key (5), syringe needle (3) with the bottom of handwriting (4) can be dismantled and be connected, injection push away key (5) top upwards is provided with extension rod (6), prevent stinging mechanism (1) including preventing stinging casing (12) and set up in preventing stinging device (13) in preventing stinging casing (12), prevent stinging casing (12) including can dismantling last casing (33) and lower casing (34) that set up, prevent stinging casing (12) and run through and be provided with and wear to establish passageway (14), wear to establish passageway (14) and be used for holding insulin pen (2), prevent stinging device (13) including button (17) and auto-change over device (37), button (17) top is stretched out from wearing to establish passageway (14) prevent stinging casing (12), the bottom end of the button (17) penetrates through the clamping ring (18) and abuts against the top of the rotating ring (19), a movable channel (27) penetrates through the button (17), the movable channel (27) is communicated with the penetrating channel (14), the extension rod (6) upwards extends out of the movable channel (27), the extension rod (6) and the button (17) are not interfered with each other, dislocation devices (29) are symmetrically arranged on two sides of the side wall of the lower part of the penetrating channel (14) at the bottom of the rotating ring (19), the dislocation devices (29) are used for driving the needle head (3) to be separated from the pen body (4), and in a first state, the needle head (3) extends out of the bottom of the puncture-proof shell (12); a second state, in which the needle (3) is retracted into the anti-prick housing (12); in a third state, the dislocation device (29) drives the needle head (3) to be separated from the pen body (4); the button (17) is used for being pressed by a person to control the switching device (37) to work, so that the first state, the second state and the third state are sequentially switched and circulated.

2. A puncture-proof insulin pen according to claim 1, characterized in that the upper housing (33) and the lower housing (34) are connected by screw thread.

3. A puncture-proof insulin pen according to claim 2, wherein a protruding ring (8) is fixedly arranged on the upper portion of the pen body (4), an annular protrusion (15) is arranged on the lower side wall of the through passage (14) along the circumference, a first return spring (16) is fixed on the annular protrusion (15), the top of the first return spring (16) abuts against the bottom of the protruding ring (8), the switching device (37) comprises a clamping ring (18) and a rotating ring (19), the outer circumferential wall of the clamping ring (18) is fixed on the side wall of the through passage (14) in the upper housing (33), a plurality of notch groups (20) are arranged on the lower side wall of the clamping ring (18), each notch group (20) comprises a first notch (21), a second notch (22) and a third notch (23), and the first notch (21), The lengths of the second notch (22) and the third notch (23) are reduced in sequence, the bottoms of the first notch (21), the second notch (22) and the third notch (23) are arranged to be arc-shaped inclined planes, the connecting parts among the first notch (21), the second notch (22) and the third notch (23) are inclined planes, the first notch (21), the second notch (22) and the third notch (23) are arranged on the inner side wall of the clamping ring (18) and extend upwards to form extension grooves (24), the bottom of the button (17) is provided with a plurality of tooth grooves (25) along the circumference, the side wall of the lower part of the button (17) is provided with a plurality of limiting blocks (26), the extension grooves (24) are used for the limiting blocks (26) to be clamped in, each limiting block (26) is arranged between two tooth grooves (25), and a plurality of clamping claws (28) are uniformly distributed on the side wall of the rotating ring (19), the bottom butt of button (17) is in the top of rotating ring (19) makes jack catch (28) card is gone into tooth's socket (25), when the people pressed button (17), jack catch (28) can be gone into in first breach (21) or second breach (22) or third breach (23), the bottom of rotating ring (19) is used for the butt to be in the top of bulge loop (8), wear to establish still to be provided with butt piece (35) on passageway (14) lateral wall, butt piece (35) are located the below of second breach (22).

4. The insulin pen with the stab prevention function according to claim 3, wherein the bottom of the pen body (4) is provided with a docking port (7) for docking the needle (3), the needle (3) comprises a base body (9) and a needle tube (10) mounted on the base body (9), the end of the base far away from the needle tube (10) is provided with a clamping portion (36) for clamping the docking port (7), the sidewall of the base far away from the needle tube (10) is provided with a dislocation ring (11), the dislocation device (29) comprises a dislocation block (30) and a second return spring (31), the sidewalls of the two sides of the lower portion of the through channel (14) in the lower housing (34) are both provided with accommodating grooves (32), one end of the second return spring (31) is fixed to the bottom of the accommodating groove (32), and the other end of the second return spring (31) is fixedly connected to one end of the dislocation block (30), one end, far away from the second return spring (31), of the dislocation block (30) is set to be an inclined plane, and the inclined plane gradually inclines downwards from the side wall of the penetrating channel (14) to the center.